5/16/2011 PERMALINK
Possible setback for reprogrammed stem cells.- Technology Review A promising type of stem cell may not be as well-suited for tissue replacement transplants as scientists had hoped. According to new research, induced pluripotent stem (iPS) cells derived from adult tissue but with the potential to proliferate indefinitely and to turn into any type of tissue, can trigger an immune reaction when the undifferentiated cells are transplanted into tissue-matched mice. It is still possible that human iPS cells may not trigger the same adverse reaction.